Ok, I may as well join the club since I'm workin with a 250w. I'm a total noob and I was wondering... is it neccessary to utilize some type of enclosure when using a low wattage light like a 250? My grow closet is pretty damn big, and I am now having doubts about a 250w being enough for me to grow with in there. I see most of the grows in this thread are in small boxes or cabinets. My closet is 9ft long, 4ft wide and 8ft high. I am gonna grow the plants in one end of the closet. Does the size of the room in which the light is placed make a difference? Will there be a massive amount of dissipation causing me to lose light? I am not going out and buying any type of enclosure or grow box, so I am gonna have to make do with what I have for now.. I may have to upgrade to a larger light eventually, but I'm gonna start with what I have. I am thinking of maybe just putting a white shower curtain in front of the plants going across the width of the closet just to kinda section em off and contain the light. Any suggestions??? thanks